num               134 syscall.c        int num;
num               137 syscall.c        num = curproc->tf->eax;
num               138 syscall.c        if(num > 0 && num < NELEM(syscalls) && syscalls[num]) {
num               139 syscall.c          curproc->tf->eax = syscalls[num]();
num               142 syscall.c                  curproc->pid, curproc->name, num);